/Engine/Source/Editor/Sequencer/Public/ISequencerModule.h
Registers a delegate that will create an editor for a track in each sequencer.
A handle to the newly-added delegate.
[FDelegateHandle](API\Runtime\Core\Delegates\FDelegateHandle) RegisterTrackEditor ( FOnCreateTrackEditor InOnCreateTrackEditor, [TArrayView](API\Runtime\Core\Containers\TArrayView)< [FAnimatedPropertyKey](API\Editor\Sequencer\FAnimatedPropertyKey) > AnimatedPropertyTypes )